Gary or Gerri? Help

Not sure if the Black Mystery Snail :;snail I got for my birthday is male or female. I can tell the difference between my livebearing fish but I'm having difficulties with my snail. Can anyone help? :;dk

The LFS told me they were hermaphrodite's and breed are their own but after some research I found out that they're NOT. Grrrr!

I was a little worried when I first got him/her thinking it was going to be a very boring pet but it was active right away and since I'm a night owl I get to see it in action a lot. I found this link from another thread on LS in case someone else has the same question.